When charging lead-acid batteries during a boost in battery charging, or overcharging, or when a cell has achieved approximately 95% of its charge a chemical reaction occurs between the water/sulfuric acid solution and the lead plates which produces hydrogen gas.  This is generated from the battery due to the action of the electrolysis of water contained in the electrolyte solution.

Common Battery Charging Applications

Golf Cart Charging

Forklift Charging

Battery Charging

Gases Found

Hydrogen

Both hydrogen and oxygen are separated through this process and can leak through the battery vents and disperse into the surrounding environment. The combination of Hydrogen and oxygen/air can be explosive if there is enough Hydrogen build-up. The amount of Hydrogen produced depends on the size and number of batteries and the size of the room plays a factor in the safety risk.

Safety

The best way to mitigate these risks is with a fixed gas detection system within the charging area.  The Macurco GD-6 combustible gas detector is designed to detect, alert, and control devices to ensure dangerous levels of hydrogen are reduced.

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